When I was at CES in 2003 I remember both the Unison and Triangle rooms displaying a combo consisting of a Unison hybrid integrated with Triangle speakers.
I remember both set ups being fast, lively and musical. The only thing that I'd criticize is that the overall balance was a bit on the light and lean side for me.
I'm currently enjoying a 37wpc Bel Canto SET40 with ProAc 2.5s. Your Antals could probably be happy with less power than my amp, but I couldn't be sure if a low powered SET would work either.